Amalgam plugger



July 10, 1928. 1,676,715

E. M. SNYDER AMALGAM PLUGGER Filed Nov. 19, 1925 gwwntoz flea/"LE 31g I $51; may; I abtomqd' Patented July 10, 1928 r i UNITED STATES "PATEN TOFFICE. I v EARL M. suynnaor DETROIT, MICHIGAN. .I AMALGAM PLUGGER. i I I Application filed November 19 1925. Serial No. 70,128.

This invention relates to improvements in handle portion of an amalgam plugger comdental instruments, particularly to instru- I monly used in dentistry, having working ments adapted for use as amalgam plug v ends 2, 3, 4,5, 6, 7, 8, and 15. gers, or, for similar purposes Where any The instruments are further; supplied plastic or semi-plastic material is to be inwith carrying ends 10, 11, 12, 13, 14 and 9- serted into a cavity of a tooth, the plugger and adapted to keep amalgam or other fillhaving working ends in multiple or othering materials from falling ofl the in truwise, and a concave carrying end adapted ment when inserting filling inthe cavity of to keep the amalgam or filling material from the tooth. These working ends are supplied 10 falling oil" the instrument when it is in use. with a concavity extending asuitab-le dis- The object of this invention is toproduce tance into the carrying ends 10, 11, 12, 13,

a dental instrument as described above, 14:, and 9, as at16. The plugging ends of which will be more efficient as a carrier of the instrument are formed with serrated amalgam or other filling materials, in keepsurfaces at the tips and designed particuing such filling materials on the instrument larly for matrix work, as at 2 and 19.

until it is placed in the cavity of the tooth, The slightmodification in form of Fig. 2,

thereby keeping such filling materials from is designed for filling small and fairly large dropping into the patients mouth during plt cavities on 'th buccal on molars'and the process of filling a tooth. blcuspids.

20 Another object of this invention is to pro- The modified form in Fig. 5' is especially I i duce a set of instruments-where at least one adapted for filling distal or other cavities of them can be used to fill any cavity in any hard to reach'with other instruments 'on up-',, tooth in the mouth efiiciently with amalgam per or lower third molars or second molars or other filling material in the easiest manin case the third molars are not present or' I 25 ner possible'for the operator. where any tooth is standing alone.

Practically all such instruments now in The modified form of instrument shown general use, with a few exceptions, have a in Fig. 6 is also particularly adapted for.

serrated end only for carrying such filling matrix work. r materials. These ends become worn with The carrying end of this instrumentis of 30 use and become practically useless as a carconcave form in all its modifications, takrier while still working well as a plugging ing more'of the cone-shaped concavity, leaninstrument. I

Other objects will appear in the following shape has been shown by experiment to be detailed description and in the showing of --more satisfactory, both in carrying the fill- 35 the single sheet of drawings as herewith ing material, and inallowing such filling made a part of the application. material to completely disengage itself from In the drawing, the instrument, upon inserting the filling Fig. 1 represents a side view of an amalmaterial into the cavity.

gam plugger having one carrying end of This invention provides a more efficient concave form. Y carrying end with a better retention quality Fig. 2 illustrates a side view of an amalfor the filling and a carrier that will comgam plugger in modified form over Fig. 1. pletely disengage itself from such material Fig. 3 represents a slight modification of When it is placed into the cavity of the Figures 1 and 2. tooth.

' 45 Figs. 4 and 5 illustrate slight modifiea- The dental instrument describedherewit-hes tion in form of amalgam pluggers as dismay be used for varioustypes of plastic or closed in Figures 1, 2 and 3. semi-plastic filling material other than Fig. 6 represents a side view of a dental amalgam and will give the same advantages instrument slightly modified over Fig. 1. 'as'described and claimed for amalgam fill- 50 Numeral 1 designates a gripping or ings. i

ingslightly toward a box shape effect. This i if Numerals 17 and 18 represent sectional extending substantially the full length of views of workingends 4 and 5, disclosing the head of the instrument, for maintaining preferabl flat working surfaces. the amalgam or other plastic or semi-plastic What claim is :7 material from falling ofi the instrument,

I 5 A dental instrument having a carrying whether in normal or inverted position.

end comprising a head, the head consisting In testimony whereof I aflix my signature. of a smooth, deep, conical shaped concavity V v EARL M. SNYDER. 

